/Engine/Source/Runtime/Engine/Public/Animation/AttributesRuntime.h
static void GetAttributeValue ( [FStackAttributeContainer](API\Runtime\Engine\Animation\FStackAttributeContainer) & OutAttributes, const [FCompactPoseBoneIndex](API\Runtime\AnimationCore\FCompactPoseBoneIndex) & PoseBoneIndex, const [FAnimatedBoneAttribute](API\Runtime\Engine\Animation\AnimData\FAnimatedBoneAttribute) & Attribute, double CurrentTime )